<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="js/vue-2.6.10.js"></script>
</head>
<body>
<div id="ss">
  {{msg}}
</div>
<script type="text/javascript">
    new Vue({
        el:"#ss",
        data:{
            msg:""
        },
        created (){
            this.msg="长颈鹿";
            console.log(this)
        }
    });
</script>
</body>
</html>